Safety-seal for receptacles.



G. G. FRYER.

SAFETY SEAL FOR REC'EFTACLES.

APPLICATION FILED DEC- 5. 1910.

Patented Oct. 26, 1915.

INVENTOR WITNESSES:

GEORGE G. FRYER, 0F SYRACUSE, NEW YORK.

SAFETY-SEAL FOB RECEPTACLES.

7 Specification of Letters Patent.

Patented Get. 26. 1915..

Application filed December 5, 1910, Serial No. 595,640%.

To all whom it may concern:

Be it known that I, GEORGE G. FRYER, of Syracuse, in the county of Onondaga and State of New York, have invented a certain new and useful Safety-Seal for Receptacles, of which the following is a specification.

This invention has for its object the production of a safety seal for receptacles containing highly volatile liquids, as aqua ammonia and hydro-carbons; and it consists in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had to the accompanying drawing in which like characters designate corresponding parts in all the views.

Figure l is a vertical sectional view of one embodiment of my invention. Fig. 2 is a fragmentary view of the cap shown in Fig. 1.

1 is the receptacle for volatile liquids, such receptacle having an opening 2 in its upper side which is closed by a suitable cover in the form of a dome 3, the cover having an exhaust passage 4. The receptacle may be the ordinary tank car, or any other suitable container; and the exhaust passage 4:, although here shown as formed in the cover 3, may be provided at any other convenient part of the receptacle.

5 is the safety seal extending across the exhaust passage 4, this seal being usually an imperforate diaphragm usuallv formed of metal, as lead, and being strong enough to withstand a predetermined pressure from within the tank, and to rupture if the pressure increases above the predetermined amount.

6 is a cap mounted on the upper end of the cover 3, or walls of the passage 4 thereof, the cap havlng openings in its side walls and the openings being arranged at mclined angles relatively to the axis of the passage 4 for directing the gases projected through the openings after the diaphragm 5 is ruptured.

As here illustrated the cap 6 is provided with downwardly and outwardly inclined openings 7, and the jets expelled through such openings are deflected upwardly by an annular deflector 8 extending around the base of the cap, and here shown as formed integral with the cap. Owing to the angle of the openings 7 and to the deflector 8, the gases shoot upwardly in a column instead of flashing in all directions. Thus injuring of persons and damaging of property near the receptacle, is avoided.

The cap serves as a guard for the diaphragm and the inclined openings 7 also prevent the insertion of sticks into the cap for the purpose of maliciously rupturing the diaphragm.

The cap is held in position by clamping members as bolts 9 extending through the bottom of the deflector 8 and through a flange 10 projecting from the cover 3 near the upper edge of the walls of the passage 4', and usually the diaphragm 5 is clamped between such cap and the upper edges of the walls of the passage 4. Preferably as seen in Fig. 2, the cap is formed with a duct 11 near its base through which water or other liquid on the diaphragm 5 may drain off, the duct 11 also opening through the bottom of the deflector 8.

Owing to my safety seal for receptacles, leakage of gases, and consequently weakening of the liquids in such receptacles is prevented by the diaphragm and the strength or thickness that the diaphragm must be made in order to withstand a given pressure, can be accurately determined, and thus my safety seal is of advantage over the ordinary safety valve heretofore employed as there is always leakage of the valve, and it cannot be determined with any degree of accuracy at what point the safety valve must be set in order to be released when a certain internal pressure is reached.

What I claim is:

1. A receptacle for volatile liquids having a diaphragm extending across the exhaust passage and resting on the upper edge of the wall forming the exhaust passage, a cap mounted above the seal and resting on the margin of the seal, the cap having escape openings which are inclined downwardly and outwardly, and the cap being formed at a J the path of jets projected through said escape openings, the cap being forinedwith a drain openlng extendlng lnto the lnterlor thereof and also opening through the bottoin of the gutter flange, and means for clamping the cap in positionwithout turning the same, substantially I as and for the purpose de scribed. v 7 i 3; .A receptacle for volatile'liquids having an exhaust passage, a safety sea-l extending across the exhaust passage, a cap for the exhaust passage having escape openings which are inclined downwardly and outwardly, the

cap being formed with a deflector in the form of an upwardly facing gutter arranged Gopiesof this patent may beobtaind for in the path of the jets projected through said escape openings, the exhaust passage having a laterally extending flange opposed to the lower side of the gutter, and fastening members extending through the bottom of the gutter and the flange, substantially as and for the purpose set forth.

In testimony whereof, I have hereunto signed my name in the presence of two attesting witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 17th day of November 1910.

GEORGE (in Flt-YER.

Witnesses:

FRED R. Hnn'rzoe, JOHN THURWACHTER.

five cents each, by addressing the Commissioner of Patents.

Washington, D; G. 

